Ring-loading jack



June 24 1924.? I 1,498,967

G. H. HIGGINS,

RING LOADING JACK Filed Feb. 1. 1921 4 Sheets-Sheet 1 I l l J \lllllll Jame 24, 1924. 1,498,967

' G. H. HIGGINS RING LOADING JACK Filed Feb; 1" 1921 4 Sheets-Sheet 2 89 3y I a5 37 a Y M 43 45 I I f 27 a4 A x I 40 f fV A? 7 7 1 1 49' V v (25212655653 a??? gfffl 7/ lune 24. 1924. 1,498,967

G. H. HIGGINS RING LOADING JACK Filed Feb. 1 1921 4 Sheets-Sheet 5 h 47 46 |I H y 2/ 24 I yl ii 2 N II l E 26 E 57 C M v 1 Kn. )l,r .l:

June 24, 1924.

G. H. Hlgems RING LOADING JACK 4 Sheets-Sheet 4.

Fil ed Feb. 1. 1921 Fatente June 24?, 1924.

T iii NT OF IC GEORGE H. HIGGINS, OF ROCKFORD, ILLINOIS, ASSIGNOR TO BURD HIGH. COMPRESSION RING COMPANY, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

RING-LOADING JACK.

Application filed February 1, 1821;. Serial No. 441,617.

' To all whom it may concern:

Be it known that I, GEORGE H. HreeINs, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Ring-Loading Jacks, of which the following is a specification.

This invention relates to what I term a ring-loading jack, especially designed for aligning and locking on an arbor, a stack of annular objects, such as piston rings, in an axially and radially compressed condition. The arbor with the rings thus secured thereon, may be placed between centers in a grinding machine for finishing the periphery of the rings. Heretofore, in the production of piston rings, devices have been provided for this purpose, but they have been objectionable for the reason that they require the services of a special operator for loading the rings on arbors, or that they were of complicated construction and costly to build and operate.

In the present invention, I have aimed primarily to efiect a saving in the production of piston rings and of any annular objects of similar characteristics, by the provision of a novel loading jack, whereby the split rings will be radially compressed to a predetermined degree and axially aligned and secured in this condition on an arbor or the equivalent. By means of this invention, a single operator can very efiiciently operate both a ring-grinding machine and a loading 'ack.

3 Another object is to provide a loading jack so constructed that the rings through out the length of the arbor will be under equal radial compression and will be accurately aligned, irrespective of the location of the ring openings or gaps. 1

Other objects and attendant advantages -will be appreciated by those familiar with this art as the invention becomes better .understood by reference to the following description when considered in connection with the accompanying drawings, in which Figure 1 is a side elevation of a loadin jack embodying my invention; 7

Figs. 2 and 3, top and front views respectively, of the loading jack;

Fig. i, a horizontal sectional view taken on the line H of Fig. 3;

.with a stack of rings;

Fig. 9, a sectional view taken substantially on the line 99 of Fig. 1; 7

Fig. 10, a detail section taken on the line 10--10 of Fig. 5; and

Fig. 11, a perspective View of a piston ring of the type adapted to be loaded on the arbor. v

The present invention designs, primarily, to efiect a saving of time and labor in the loading of ring-like objects on an arbor, so that a stack of rings so loaded may be quickly and uniformly ground in a grinding machine to the requisite diameter. 'In illustrating the principles of my invention, I have taken as an example a conventional piston ring 12, the joint 13 of which may be of any sha e, that shown being a simple lap-joint. propose to mount a stackof these rings on an arbor designated generally by character 14, in the manner shown in Fig. 8. That is, I desire that the rings shall be in true axial alignment on the arbor and that they shall be under equal radial compression; also that they may be positioned on the arbor irrespective of the location of their respective joints. In the present case, one end 15 of the arbor has a flat cutaway 16 and an inwardly spaced rigid collar 17. The rings are stacked on the arbor between the collars 18 and 19 loose thereon, and a nut 21 threadingly engaged on the arbor is adapted for axially compressing the rings between the collars and for locking them on the arbor after they have been properly aligned and radially compressed.

In commencing the loading operation the arbor will be placed in a'vertical position on the table 22 with the end 16 located in the socket 23, which as shown in Fig. 10, holds the arbor against rotation. The arbor may be loaded with a stack of rings either before or after its placement in this position, the rings being confined between the collars 18 and 19 and the nut 21 being turned down, but not tight. A sectional loading sleeve comprising in the present inradial pressure to said radially compressing the stack of rings and limited in such compression by engagement with said peripheral collar surfaces, and means for longitudinally clamping the rings for securing them onto the arbor in said radially compressed condition.

'2. The combination of an arbor equipped at each end with concentric collars of uniform outer diameter, between which collars a stack of split piston rings may be inter-- posed, means for axially aligning and uniformly radially compressing the rings to an outside diameter determined by that of the end collars, and means for axially compressing the rings to lock them on the arbor in said aligned and radially compressed condition.

3. A loading jack comprising a table, an arbor supported in a socket on the table and held against rotation, end collars on the arbor between which it is adapted t v be positioned, a stack of rings, sleeve sections adapted to align and radially compress the rings on the arbor as determined by the diameter of the collars, means for applying sleevev sections, and means for longitudinally compressing the rings on the arbor, and for locking the rings in such compressed condition.

ring loading jack comprising an arbor adapted to carry a stack of rings, sectional sleeve sections for peripherally clamping the rings, mechanism for iniposing a powerful radial clamping action on said sleeve sections, and means for compressing the rings longitudinally of the arbor while under said radial compression and for locking them in such compressed condition.

5, A loading jack comprising in combination with an arbor having end collars be tween which may be interposed a stack of annular objects and having also a threaded member for tightening the collars and said objects by axial compression, of a support adapted to hold the loaded arbor in upright position against rotation, a sectional sleeve adapted to radially compress said objects and limited by the collars in approach to the arbor, a pilot head for holding the upper end of the arbor in vertical alignment with the lower end, and means for subjecting said sleeve sections to powerful radial compression for aligning the rings and compressing them to predetermined outer di ameter.

6. A loading comprising in combination with an arbor having end collars between which may be interposed a stack of annular objects and having also a threaded member for tightening the collars and said objects by axial compression, of a support adapted to hold the loaded arbor in upright position against rotation, a sectional sleeve adapted to radially compress said ob ects and limited by the collars in approach to the arbor, a pilot head for holding the upper end oi the arbor in vertical alignment with the lower end, a pair of pivoted arms adaptedto be swung into and out of closing relation with said sleeve sections and one of said arms having a coupling member'adapted to connect with the opposite arm when in said closed relation, and a cam lever on one of said arms operable to impose a powerful radial compression on the sleeve sections. i

'2'. A loading jack comprising in combination with an .arbor having end collars between which may be interposed a stack of annular objects and having also a thread' ed member for tightening the collars and said objects by axial compression, of means for supporting the arbor against rotation, sleeve sections embracing the rings and collars, and means for radially compressing said sleeve sections including a cam and operating means therefor,

8. A loading jack comprising a table adapted to support an arbor in upright position, and to hold the arbor against rotation, end collars on the arbor between which maybe interposed a stack of annular objects, sleeve sections embracing the annular objects and collars throughout substantially the length thereof, a pair of jaws adapted for radially clamping the sleeve sections, means pivotally supporting the jaws so that they may be swung into and out of clampmg position, cam-operated means for imposing a powerful radial clamping action on the jaws, and a out on the arbor for axially compressing and locking the annular objects to the arbor.

9. A loading jack for aligning, compressing and locking piston rings on an arbor, comprising means for supporting the arbor in upright position against rotation, a pair of arms pivotally supported at the back oi the table and each equipped With means adapted t be brought into clamping relation with the rings and to be swung outwardly on the arm pivots to inoperative position, means for coupling said arms in clamping relation, and a cam lever mounted on one f said arms for imposing a powerful radial compression on said clamping means.

10. Means for aligning, axially compressing looking a stack of split rings on an arbor, comprising a table for supporting an arbor in upright position against r0tation, a pilot head for holding the upper end of the arbor in vertical alignment with the lower end, longitudinally split sleeve sections embracing the rings, a pair of levers pivotally mounted at the rear of the arbor and reaching forwardly, one at each side thereof, ,a iaw carried by each arm for clamping one of said sleeve sections, means radially 105 for coupling the forward ends of": said arms to prevent spreading, a cam lever on one of said arms operable for imposing a powertlnl clamping action on said jaws to thereby align and radially compress the rings and a nut on the arbor for axially compressing and locking the rings on the arbor.

11. The combination of a table, an arbor supported thereon in upright position and held against rotation, concentric end collars on the arbor between which are adepted to be interposed a. stack of split piston rings, a nut on the arbor above the uppermost collar, :1 pilot head for holding the upper end of the arbor in axial alignment with the lower end, av pair of semi-circular elements reaching from collar to collar and adapted for radially compressing the rings to a diameter determined by the outside diameter of said collars, and means for subjecting said elements to a powerful radial compression.

GEORGE HIGGINS. 

